Fountain-pen.



N0. 772,204. PTENTED 00T. 1l, 1904. P. W. BENDER.

POUNTAN PEN.

APPLICATION FILED AUG. 25.1903.

No MODEL.

lill/ll.

UNITED STATES Patented October 11, 1904.

PATENT OFFICE.

FOUNTAIN-PEN.

SPECIFICATION forming part of Letters Patent No. 772,204, dated October 11, 1904.

Application led August 25, 1903. Serial No. 170,695. (No model.)

To @ZZ whom it may concern.:

Be it known that I, FREDERICK WILLIAM BENDER, a citizen of the United States, residing at the city of Hoboken, county of Hudson, State of New Jersey, have invented new and useful Improvements in Fountain-Pens, of which the following is a specification.

My invention relates to a valve consisting of a bar enlarged at the ends and held loosely in the feed-pipe, so that when the ink flows into the feed-pipe through the valve the valve changes its position with the movement of the pen, thus inducing an Veven flow of ink, and also t a locking device consisting of a movable reservoir which screws in and out of the cylinder. The inner end of the movable reservoir thickens into a rim or collar, so that when the reservoir is screwed inward it presses against the said valve and closes the outlet to the feed-pipe, preventing the egress of ink and the ingress of air.

I attain these objects bythe mechanism illustrated in the accompanying drawings.

Figure l is a section of the feed-pipe, showing the movable valve in position. Fig. Q is a section of the entire device,showing the parts assembled. Fig. 2a is a cross-section of the pen on the lines p p. Fig. 3 is a section of the entire device with the part of the outer cylinder cut away, showing the space over which the reservoir moves. Fig. 3a is a crosssection of the device on the lines r r. Fig. L is a section of the device with the hood over the point, a part of the hood and of the outer cylinder being cut away to show the reservoir locked against the valve.

Similar letters refer to similar parts throughout the several views.

The feed-pipe /t is threaded on the inner end at and the inner portion narrows at y into a shoulder and then enlarges into a socket a'. The valve is a bar b, enlarged at one end into the ball c and at the other end into conical Shape c. Bar is less in circumference than the inner shoulder y of the feed-pipe, and the parts c and c of the valve are' greater in cir;- cumference than the said shoulder y, so when the ball c of the valve is placed within the feed-pipe the valve is held loosely in position by the shoulder y.

locks the device.

The outer cylinder c is threaded at the one end to screw on the feed-pipe at The inner part of the cylinder contains a rim or collar at s. Within the cylinder moves the reservoir f upon the threads d, which correspond with threads cut in the cylinder at d. The reservoir protrudes beyond the end of the cylinder at t and is thickened at the other end into the collar m.

When the end of the reservoir is screwed at t, the collar m pushes the movable valve into the socket a', stops the iiow of ink, and

When the reservoir is unscrewed, it moves away from the valve as Jar as s, where it is stopped by the inner collar of the cylinder at s. When the penholder is unlocked, the valve moves freely in accordance with the force of gravity in the shoulder y and permits an even flow of ink.

When the device is locked, the air is eX- cluded, and the ink is less apt to corrode.

On both ends of the device tits the hood g.

What I claim as my invention, and desire to secure by Letters Patent, is-

l. In a fountain-pen the combination ofthe valve d having the enlarged ball portion c at one end and the enlarged conical-shaped por- 4 tion a at the other end, the feed-pipe it which is threaded about the inner end at and has in the inner end the socket a which narrows inward into the shoulder y, the reservoir f having the collar m at one end and the threads d near the other end which iits into the threads of the outer cylinder, the outer cylinder la having inner threads at one end to iit the threads of the feed-pipe mand the inner collar s and the inner threads to fit the threads of the reservoir at d, and the hood g all substantially as set forth.

2. In a fountain-pen the .locking device c'onsisting of a reservoir f having the collar m the end t and the threads d which reservoir moves in the cylinder when screwed at the end t, the cylinder having the inner collar s near the inner end of the cylinder, the valve b enlarged at one end into the ball c and at the other end into the conical-shaped extremity a, the feed-pipe it .having a socket c provided with a shoulder y in which feed-pipe the valve hangs loosely, so that when the res- IOO ervoir is screwed inward by turning the end z5 the collar vm of the reservoir pushes the e11- larged end a of the valve into the socket a and closes the aperture thus preventing the flow of ink, and when the reservoir is unscrewed it releases the valve and moves away from the valve until the collar m ot' the reservoir meets the collar s of the outer cylinder thus unlocking the device substantially as described.

3. In a fountain-pen the valve having the ball c at one end and the conical-shaped part a at the other end, and the feed-pipe 7L having a socket ce provided with a shoulder y so that the valve may be held loosely in the feed-pipe 15 /L and may move with the force of gravity and permit an even flow of ink, substantially as described. y

In testimony whereoic I have hereunto signed my name to this specification in the presence 2O or' two subscribing witnesses'.

F. WILLIAM BENDER.

Witnesses:

ARTHUR J. VVESTERMAYR, ELMAR J FRIEDRICHS. 

